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" MECHANICAL MOVEMENT EOE BIGYGLES.

Patented June 21, 1898.

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j V. BELANGBR. MECHANICAL MOVEMENT POR BICYCLBS.

N0.f6o5,f844. 'PatentedfJunezL 1898.

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.UNiTEn-fSTATES? vIcTOR BLANGER, OF

BOSTON, MASSACHUSETTS, ASSIGNOR To-JOSIAH Y QUINCY, OF SAME PLACE.

MECHANICAL MOVEMENT FOR BICYCLES.

SPECIFICATION forming part of lLetters Patent No; 605,844,"dated J une 21, 1898. E

Application ned Jury 10,1897,4 Santino. 614,065'. (No'mi'ib To all whom it may concern:

Be it known thatl, VTOTORBLANGERQOL Boston, in the county of Suffolk and State Of Massachusetts, have invented certain new. and useful Improvements in Mechanical Movements for Bicycles, of which the following is a specification.' v I This invention has relation,tonmechanical movements, andhas forits object to provide a mechanism for transferring power from one rotatable member to another rotatable member, constructed in such way thatthe lastmentioned member may be driven at the same rate of speed as the first-mentioned member or at a slower rate of speed at will, whereby the greater amount of power may be imparted fromthe rst member to the second memberrwithout` fa 'correspondingincrease inv the iirst-mentionedmember. I A In other words,'the object of the invention is to provide an arrangement of gearin'glca pable of being rotated or manipulated in such way that the initial power may be multiplied with but small loss of speed. l Y A To these ends the invention consists of certain features of construction and relative arrangement of parts now to be described in the specilication, illustratedlupon the drawings, and more'particularly pointed out in the appended claims.

Reference is'topbe had to the accompanying drawings, and to the letters marked thereon, forming a partof this'speciiicatiomthe same letters designating like parts 'or'features, as the case may be, wherever theyoccur.

For the purpose'of illustrating one embodiment of my invention I have shown' it as being combined with the 'sprocket and hub of the rear wheel of a bicycle, in which- Figure 1 represents a vertical longitudinal section through the hub of the rear wheel of a bicycle. Fig. 2 represents a transverse section on the line 2 2v of Fig..A 1. Fig. 3 represents a similar Section on the line 3 3 of Fig. 1. Fig. 4 illustrates in longitudinal section the preferred form of my device. Fig. representsa cross-section on line 5 5 of Fig. 4:. Fig. 6 represents a Similar section on the `line 6 6 of Fig. Li. Fig. 7 illustrates in side elevation the bearing-sleeve and the rolls, two of the rolls being removed. In this figure the c2 on the enlarged end of thesleevec.

outerfbearing and the hub `are shown in section. A' Fig. Sillustrates the rear portion of the frame of the bicycle, showing the manner ofoperating the brake. Fig. 9 shows in 'perspective one form of brake which I employ.,V 10 Arepresentsin perspective one vform of loekfor thebrake, and Figs. 11 and I12 illustrate another form of lock which I usually prefer to employ.

4 Of the drawings, a a indicate the rear forks of a bicycle, in which is rigidly secured the spindle d, having bearing-cones a2 a3, which are'threadedthereon, so as to be adjustable toward and'from each other and being locked under normal conditions by lock-nuts in the usual way.

b' indicates abearing-sleeve which is enf larged at one end and provided with an angular bearing-ring 1)', between which and the cone a2 is placed aseries of antifrictiOn-balls b2. The oppositeendgof thesleeve is held in place by a series of antifrictiOn-balls b3, held against the conca8 bya bearing-ring c, insei-ted in a sleeve c and having a cone c2.

The enlarged end of the sleeve c is externally threaded to receive' a sprocket-wheel d, to which power is applied from the crank--V shaft in any suitable or desired way, said Wheel being held in place by aNlock-nut d', so thatl when the said. sprocket-wheel is revolved it carries with it-the sleeve c. The said sleeve b is provided with a bearing-ring or cone h4, and the sleeve c'is provided with angular bearing-rings c3, so that theV said sleeve c'is mounted at both ends upon antifrictionballs c? b3. A

Upon the enlargedrend of the sleeve b is placed a bearing-ring or cone h5, which is arranged oppositely to the cone or bearing-ring The hub f of the rear'wheel is internally threaded at itsV ends to receive adjustable angular bearing-rings f' f2, which arearranged with relation to the cones h5. c2, so as to receive between them antifriction-ballsb6 Citas shown i'n Fig. 1.

length of the hub f, While the superposed sleeve c projects only half-way between the ends Of the hub.

Secured to the inner wall 'of the hub f, at

The sleeve b extends practically the'entire IOO the left-hand end thereof, is the internallyl lz', so as to hold and the sleeve ZJ against rotoothed ring (j, with which intermeshes an externally-toothed ring g', held in it-s eccentrical arrangement by a series of antifrictionrollers g2, inserted between it and the bearing-surfaces on the sleeve 7), the said antifriction devices being of different diameters or graded, as shown in Fig. il.

rIhe ring g is enlarged at its right-hand end and is provided with a groove or socket to receive a roller 7l, mounted upon the end of a pin 7L, projecting forward from the end of the sleeve c', so that the said sleeve and the eccentrically-arranged ring g are loosely connected together, whereby the rotation of the sleeve c will cause a correspomling` rotation of the ring y.

Upon the end 7)? of the sleeve 7), which projects beyond the hub,is placed a hub or wheel z', rigidly secured thereto, as by a screw z. (Shown in Fig. l.) About this hub is passed the friction-strap j of a brake device, the said device also comprising an arm y", loosely mounted upon the end of the spindle a, and a lever ji, pivoted atje to the end of the arm j", the strap being secured to the end of the leverj, with its other end attached thereto at a point intermediate of the ends of the said lever. The rod or wire 7u extends from the end of a leverj2 through a guide 7.2', mountedA upon one ot the rear forks a, and is provided with a pin 7S, sliding in a slot 7e3 in said guide. ly drawing upon the end of the rod or wire 7U' the leverj2 draws the brake-strap] tightly around the hub l', so as to hold it and the sleeve Z) against rotation, the rod 7e' being held in this position by partially turning it, so as to lie in the cross-slot 7U'kl at the end of the slot 7c3. Under normal conditions the brake-strap is not clamped against the hub l1', so that the sleeve b is free to rotate, and hence the rotation of the sprocket-wheel (7 causes the rotation ot' the sleeve g about the axis of the spindle a', so as to carry with it the hub f, by reason of the toothed ring being in engagement with the gear g, forming a part of or secured to the said hub f. Under these conditions the hub f will be rotated at the same rate of speed as the sprocketwheel (7.

In Figs. Il and l2 I have illustrated the preferred form of lool; for the rod oi wire 7s, which holds the brake-strap clamped against the hub i. In these iigures the end of the rod 7tis secured to a sleeve 7u?, threaded on a bent hook-shaped member 75;. The end of this member is connected by a pivot 7J" with a disk LS, revoluble about a stud 7e and having a handle 7d". llfhen the handle is in the position shown in Fig. ll, the brake-strap is loose; but when it is turned into the position in dotted lines in that figure the pivot 797 is at a dead-center with the stud 7o, and the brakestrap is locked about the hub yz'.

lVhen it is desired to decrease the speed of the hub and increase the power for rotating it, the brake-strap is clamped about the hub tat-ion. rlhereupon the rotation of the sleeve c' causes the eccentrically-arranged ring y to rotate upon its own axis and to rotate, by reason of its intermeshing with the gear y,

the hub f at a slower rate of speed with increasing power. rlhus it will be seen that a bicycle-rider may greatly increase the power transmitted from the sprocket-wheel to the hub of the driving-wheel of the bicycle without very materially lessening its speed of rotation by means of the brake, which is easily controllable even while the bicycle is traveling rapidly.

In Figs. t to 7, inclusive, Ihave illustrated another embodiment of my invent-ion, which for some purposes and reasons is preferable to that illustrated in Figs. and i). 'Upon the spindle a is placed the sleeve m, having the threaded end 'in' and the annular flange m2. The bearing-sleeve n is cup-shaped and is provided with a partially hollow hub a', which is screwed on the threaded portion m/ of the sleeve in, after which it is secured to the flange m2 by rivets n?. The externallytoothed ring o is threaded upon a sleeve o', which is telescoped in the bearing-ring n and which is provided with a Ilange o2, against which the toothed ringoabuts. The sleeve o' is eccentric with relation to the sleeve 'nt and the bearing-ringn and is held in its eccentric relationship by the antitrietion devices p p, placed between the bearing-ring n and the sleeve o. rIhese antifriction devices are of varying diameter, as heretofore described, and they are spaced apart by loose idlers p p, which are smaller in diameter, so as not to bear against both the sleeve and the bearing-ring. These idlerrolls operate to decrease the friction which would be experienced if the rolls were all in contact, as shown in Fig. 2, and they may be cut away between their ends, as shown in Fig. 7. The externally-toothed ring (l, with which the eccentric ring o engages, is secured in the hub j" in any desirable way.

Upon the end of the sleeve m is rigidly se` cured a sleeve i', which forms a continuation thereof and which is beveled to provide cones for the antifriction-balls 71 ci. lyforming the sleeve fr separately it may be of harder steel than the sleeve m. The sleeve c' is provided with a pin 7a and block 71, which extends into t-he slot in the toothed ring supporting the sleeve o. Except as hereinbefore described the mechanism is similar to that illustrated'in Fig. I, and hence I shall IOO lIO

outer hub or wheelk having` inwardly-proj ecting gear-teeth, an eccentrically-arranged externally-Ltoothed ring'meshing with the internal teeth on the hub or wheel, antifrictionx rollers or balls having graded diameters for sustaining the toothed ring in its eccentrical arrangement, and means controllable at will for causing said ring to revolve on its own axis or else on the axis of the said hub.

2. A mechanical movement-comprising a stationary spindle, a bearing-sleeve rotatable about said spindle, a vhub arranged concentrically with relation to the spindle and sleeve, and internally toothed,' an eccentrically-arranged externally-toothed ring intermeshing With the internal teeth on the hub, antifriction devices of graded diameters for support-v ing said ring by said bearing in its eccentrical arrangement, a sprocket-wheel, means for imparting power from said sprocket-wheel to said ring, and a brake for intermittingly holding said bearing-sleeve stationary.v

3. A mechanical movement comprising a stationary spindle, a sleeve rotatable relatively to said spindle, antifriction devices inserted between said sleeve and said spindle, an eccentrically-arranged toothed ring, antifriction devices of graded or varying diamef ters for supporting said ring by said bearing in its eccentric arrangement, a rotatable hub, internally toothed and vinter-meshing with the eccentrical ring, a sprocket-wheel, means for connecting the sprocket-wheel with the toothed ring, antifriction devices between the said hub and the said sleeve; and a brake for intermittingly holding said sleeve against rotation.

4. A mechanical movement comprisinga hub. having internal gear-teeth, an eccentric yexternal]y-to'othed rin g intermeshin g with the gear-teeth, an eccentric sleeve towhich said toothed ring is secured means for drivin@ said.

eccentric sleeve, a bearing sleeve or ring concentric with the hub and surrounding the eccentric sleeves, means for holding said bearing-sleeve lstationary v temporarily and antifriction devices having varyin g diameters and interposed between said sleeves.

5. A mechanical movement comprising a hub having internal gear-teeth, an eccentric externally-toothed ring intermeshin g with the gear-teeth, a sleeve concentric with the hub and extending through the toothed ring and having a flange, a bearing ring or sleeve concentric with the first-named sleeve and secured to said liange, antifriction devices having varying diameters and interposed between the toothed ring and the said second-named bearing ring or sleeve, and means for locking said first-mentioned sleeve or ring against movement.

Vo. A mechanical, movement comprising a bicycle-hub having 4internal gear teeth, a sprocket-wheel, an eccentric toothed ring in termeshing ywithv the said gear-teethand connected with the sprocket, a brake-wheel having a bearing-sleeve concentric with the hub, graded antifriction rollers vor balls inserted between said bearing-sleeve and said toothed ring, and spacing graded rolls arranged alternately' with the antifriction devices.

7. A mechanical movement including a toothed gear, an eccentric tothed ring intermeshing therewith, abearing-ring concentric WithV the toothed gear, means for holding said ring stationary,antifriction-rolls having varying diameters -for holding .said ringI in its eccentric relationship, and reduced .rolls 1o for spacing the antifriction-rolls.

.lntestimonywhereof Ifhave signed my nameto this specification, in the presence of two subscribing witnesses, this 22d day of May,'A. D. 1897.

vieron IBiLANcmR.,

Vitnesses: Y

A. D. HARRISON, P, W. PEZZETTI. 

